The Official ACT Prep Guide 2019-2020 is the only guide from the makers of the exam and includes actual ACT test forms taken from past ACT exams. This updated edition includes 5 actual ACT tests (all with optional writing test) to help you practice at your own pace and discover areas where you may need more work. The Official ACT Prep Guide 2019-2020 provides detailed explanations for every answer and practical tips on how to boost your score on the English, math, reading, science, and optional writing tests.